How to extract Audio Track from iTunes M4V videos?
Good movies are always companied with melodies. So when you discovered some attractive interlude songs in a film or play which was downloaded from iTunes Store, how can you get the songs from iTunes M4V videos? There are many ways to extract audio from videos, but which is the best way to keep audios in iTunes M4V videos?
http://www.noteburner.com/drm-video-rental-mac/extract-audio-from-itunes-m4v.html

iTunes 8.1 offers a major speed improvement for me, as promised. I am running iTunes on a 4-year old 1.8 Ghz PPC G5 iMac with 1.5 GB RAM and was thinking of replacing the computer b/c iTunes was really getting slow with a 125GB music library and several dozen smart playlists. But it is now zippy and responsive. Very impressive upgrade.

I prefer Miro for video podcasts, as I can tell it not to auto-download new items. I didn't find this option on iTunes, and I didn't like it filling my drive while I didn't have time to watch the already downloaded items.
Miro and iTunes both can resume playback of a podcast item.